James Donlon BLVD over Contra Costa Canal

Good Condition76 years old1,873 vehicles/day

Location

StateCalifornia
CountyContra Costa
Location1.5 Mi E Somerville RD
CarriesJames Donlon BLVD
CrossesContra Costa Canal
Coordinates37.98300, -121.82950

Condition Ratings

Overall ConditionGood
Deck7 (Good)
Superstructure7 (Good)
Substructure7 (Good)
Channel/Waterway8 (Very Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length35.8 ft (10.9 m)
Max Span34.1 ft (10.4 m)
Deck Width94.5 ft (28.8 m)
Deck Area313.9 sq m
Main Spans1
Year Built1950 (reconstructed 1978)

Traffic

Avg Daily Traffic1,873 (2020)
Truck Traffic2%
Lanes On Bridge4

Inspection & Ownership

Last Inspection125
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceHistorical significance is not determined
Structure Number28C0425

Nearby Bridges

Blythe Drive over Contra Costa Canal 0.5 mi Good Gentrytown Drive over Contra Costa Canal 0.7 mi Good Putnam Street over West Antioch Creek 1.0 mi Fair State Route 4 EB over Contra Loma BLVD 1.2 mi Good State Route 4 WB over Contra Loma BLVD 1.2 mi Good Somersville Road over Contra Costa Canal 1.3 mi Good G Street over State Route 4 1.3 mi Good State Route 4 EB over Somersville Road 1.5 mi Good State Route 4 WB over Somersville Road 1.5 mi Good WB Route 4 Offramp over Somersville Road 1.5 mi Good